Home / 5,181.78-7,150.86-2,823.90

Finding the Fourth Proportional to 5,181.78, 7,150.86 and 2,823.90

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Solution

The fourth proportional to 5,181.78, 7,150.86 and 2,823.90 is: 3,896.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.78 : 7,150.86 = 2,823.90 : x
  2. Step 2: Convert to fraction form
    5,181.78/7,150.86 = 2,823.90/x
  3. Step 3: Cross multiply
    5,181.78x = 7,150.86 × 2,823.90
  4. Step 4: Simplify right side
    5,181.78x = 20,193,313.55
  5. Step 5: Solve for x
    x = 20,193,313.55/5,181.78
  6. Step 6: Final answer
    x = 3,896.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.